diff --git a/usr/lib/python3.8/vmmgr/vmmgr.py b/usr/lib/python3.8/vmmgr/vmmgr.py
index 04ef5c6..49c0e85 100644
--- a/usr/lib/python3.8/vmmgr/vmmgr.py
+++ b/usr/lib/python3.8/vmmgr/vmmgr.py
@@ -49,9 +49,11 @@ def unregister_proxy(app):
 def update_host(domain, port):
     config.set_host('domain', domain)
     config.set_host('port', port)
-    # Rebuild nginx config for the portal app. Web interface calls restart_nginx() in WSGI close handler
+    # Rebuild nginx config for the portal and existing apps. Web interface calls restart_nginx() in WSGI close handler
     with open(os.path.join(paths.NGINX_DIR, 'default.conf'), 'w') as f:
         f.write(templates.NGINX_DEFAULT.format(port=port, domain_esc=domain.replace('.', '\\.')))
+    for app in config.get_apps().keys():
+        register_proxy(app)
 
 def reload_nginx():
     subprocess.run(['/usr/sbin/nginx', '-s', 'reload'])
@@ -106,10 +108,10 @@ def request_acme_cert():
         subprocess.run(cmd, check=True)
     # Otherwise just try to renew
     else:
-        # Acme.sh returns code 2 on skipped renew
         try:
             subprocess.run(['/usr/bin/acme.sh', '--home', paths.ACME_DIR, '--renew', '-d', domain], check=True)
         except subprocess.CalledProcessError as e:
+            # return code 2 means skipped renew, which is OK
             if e.returncode != 2:
                 raise
     # Install the issued certificate
@@ -121,9 +123,9 @@ def install_manual_cert(public_file, private_file):
     # Disable acme.sh cronjob
     os.chmod(paths.ACME_CRON, 0o640)
     # Copy certificate files
-    shutil.copyfile(public_file, crypto.CERT_PUB_FILE)
-    shutil.copyfile(private_file, crypto.CERT_KEY_FILE)
-    os.chmod(crypto.CERT_KEY_FILE, 0o600)
+    shutil.copyfile(public_file, paths.CERT_PUB_FILE)
+    shutil.copyfile(private_file, paths.CERT_KEY_FILE)
+    os.chmod(paths.CERT_KEY_FILE, 0o600)
     # Reload nginx
     reload_nginx()